In September, Split typically sees daytime highs of 24.4°C and overnight lows around 14.6°C. Compared to the annual average high of 18.2°C, September runs +6.1°C.
September in Split averages a daytime high of 24.4°C and an overnight low of 14.6°C.
September runs +6.1°C compared to Split's annual average high of 18.2°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.4°C and cooler evenings around 14.6°C.